21434322102 has 16 divisors (see below), whose sum is σ = 42960445632. Its totient is φ = 7129473800.

The previous prime is 21434322073. The next prime is 21434322137. The reversal of 21434322102 is 20122343412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3822024 + ... + 3827627.

It is an arithmetic number, because the mean of its divisors is an integer number (2685027852).

Almost surely, 2^21434322102 is an apocalyptic number.

21434322102 is an abundant number, since it is smaller than the sum of its proper divisors (21526123530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21434322102 is a wasteful number, since it uses less digits than its factorization.

21434322102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650123.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21434322102 its reverse (20122343412), we get a palindrome (41556665514).

The spelling of 21434322102 in words is "twenty-one billion, four hundred thirty-four million, three hundred twenty-two thousand, one hundred two".